The execution of the "Check Extensions" script reports a module not found error, and the module cannot be found in the Perl module either

[liys888]

Can't locate Extensions/Helper.pm in @inc (you may need to install the Extensions::Helper module) (@inc contains: /root/localperl/lib /usr/local/lib64/perl5 /usr/local/share/perl5 /usr/lib64/perl5/vendor_perl /usr/share/perl5/vendor_perl /usr/lib64/perl5 /usr/share/perl5) at /opt/traffic_ops/app/bin/checks/ToPingCheck.pl line 41.
BEGIN failed--compilation aborted at /opt/traffic_ops/app/bin/checks/ToPingCheck.pl line 41.

/opt/traffic_ops/app/bin/checks/ToPingCheck.pl
.......
use Data::Dumper;
use Getopt::Std;
use Log::Log4perl qw(:easy);
use JSON;
use Extensions::Helper;
use Sys::Syslog qw(:standard :macros);
.....